28 Jul
2023
28 Jul
'23
9:35 p.m.
On 7/28/23 20:19, Chris Zach via cctalk wrote:
Well, then it wanted it write unlocked (no way on a
install disk), so
I used Imagedisk to write a copy, popped it in and with a quick
"access" it started the program and now it doesn't need the disk.
This sounds suspiciously like something I think was called Prolock or
such. Used screwed up disks, usually as the boot disk with a signature
to enable the final bit of install. Copywrite (I think it was) which
did bit binary copying with timing on the disk could copy them. Even
had some things to align with the high track bit offset of the defect.
A company I worked for bought them but didn't study the usage manual
and ended up with disks which could be copied by dos copy command, then
write protected. The genuine ones had to have the write protect
removed. The disk error from the write protect caused it to think the
read of the protected part of the track was successful.
thanks
Jim